Hello All 

This is my first, tentative effort at an OS/2 program.  I thought I would
look at threads.  The program is at the end of the message.

I was expecting thread 2 to print a few lines then swap to thread 3, print
a few lines and so on.  But it can get stuck in one of the threads for
about 19 seconds.  I also opened another window and ran the program again
and put a text editor into the foreground in another window.  Whilst the
two processes did run, one process could stall for several seconds and, not
only that, when it did get time, it would continue running the same thread
rather than swapping to the other thread.

Further more, on pressing the return key, it would continue to wack through
thread 2 or 3 and could take 23 seconds for the program to end.

I have MAXWAIT set at 2 in config.sys.  There is no value set for TIMESLICE.

The compiler is GCC/EMX09b

I seem to be missing some fundemental concept here?

Alan


#include 
#include 

int Thread2id;  /* Thread 2 ID */
void thread2(void *argp);
int Thread3id;  /* Thread 3 ID */
void thread3(void *argp);
int Thread2ctr = 0, Thread3ctr = 0;

int main()
{
    if (-1 == (Thread2id = _beginthread(thread2, NULL, 0x40000, NULL))) {
        puts("error creating thread 2");
        exit(1);
    }
    if (-1 == (Thread3id = _beginthread(thread3, NULL, 0x40000, NULL))) {
        puts("error creating thread 3");
        exit(1);
    }
    getchar();
    return 0;
}

void thread2(void *argp)
{
    while (1) {
        Thread3ctr = 0;
        printf("\tthread 2, %d\n", Thread2ctr);
        ++Thread2ctr;
    }
}

void thread3(void *argp)
{
    while (1) {
        Thread2ctr = 0;
        printf("\t\tthread 3, %d\n", Thread3ctr);
        ++Thread3ctr;
    }
}

--- FleetStreet 1.14 NR